MakePAK is a command-line tool for creating Quake .PAK files. It is supposed to be paired with PhysicsFS, which can read Quake .PAK archives. It follows the GNU standards, providing a portable, consistent, and complete utility.

Crypt::IDA is a Perl module that implements Rabin's Information Dispersal Algorithm. This is what's known as a "threshold system": a secret is divided into n shares with the property that any k (the "quorum" or
"threshold") of those shares (with k <= n) can be combined at a later time to reconstruct the secret. The algorithm should be cryptographically secure in the sense that if fewer shares than the quorum k are presented, no information about the secret is revealed. The module uses Math::FastGF2 to efficiently implement the algorithm, making it suitable for securely sharing and distributing even large files. The Crypt::IDA::ShareFile module implements a file format for creating, storing, and distributing shares created with Crypt::IDA.

Zip-Ada is an Ada library for .zip archives. Its sources are unconditionally portable. Input and output can be any stream (such as a file or buffer) for archive creation as well as data extraction. It is task safe and endian-neutral.

Cyphertite is a tar-like secure remote archiver. It deduplicates, compresses, and encrypts data prior to transmission, providing total privacy while reducing unnecessary wire traffic. It seamlessly supports IPv6 and IPv4 on a variety of platforms.